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Recent content by JayBee59

  1. J

    KOMATSU PC50UU-1 - COVER PLATE SEAL LEAK - FINAL DRIVE

    Hi all, The machine has developed a Final drive cover plate seal leak. Does anyone have a source for the seal cover plate assembly? I'm having difficulty finding the part schematic... Thank you!
  2. J

    PC50UU-1 Dies upon adding throttle...

    My PC50UU-1 starts cleanly and goes to idle and warms nicely. However, whenever I add even the slightest amount of throttle, the engine dies. I would like to request a manual if still available. Any help you may lend is greatly appreciated!
  3. J

    Manual for the KOMATSU PC50UU

    Hell tool King...My PC50UU-1 starts cleanly and goes to idle and warms nicely. However, whenever I add even the slightest amount of throttle, the engine dies. I would like to request a manual if still available. my email is [email protected]. Any help you may lend is greatly appreciated! Thanks! J B
  4. J

    Komatsu PC50UU-1 Sn1825 - No electrical power

    Diagnosed - massive starter failure with scorch marks and all! the techs believe the short also damaged the battery beyond recovery. Any suggestions for a solid battery replacement? Thanks for your help!
  5. J

    Komatsu PC50UU-1 Sn1825 - No electrical power

    Hi john. Thank you for your response. This is a komatsu. Also, when attempting to hook the positive, it was not a spark but an actual welding attempt by the lead to the post. Something in the machine has shorted. I brought another 12 volt battery and when touching the positive cable to the...
  6. J

    Komatsu PC50UU-1 Sn1825 - No electrical power

    Hi, There is no relay visible and the battery is plainly accessible on the starboard side of the engine compartment. I have resized the original 5"x8" to 8.5"x11" and attached the electrical diagram covering serials 1001-3400 (SN1825 is mine). I will be attempting a direct jump from my Ford...
  7. J

    Komatsu PC50UU-1 Sn1825 - No electrical power

    Hello all, I have taken delivery of a reconditioned Komatsu PC50UU-1 Sn1825 (see the one I purchased here ) I have only driven the thing for 12-15 hours since delivery a few weeks ago. On 04-02-23, I shut the unit off as normal. The next morning, I initiated the glow plug procedure, but...
  8. J

    Manual for the KOMATSU PC50UU

    Hello! I just took delivery of a PC50UU-1 Sn1825. I believe the starter motor has failed... I cannot find a manual anywhere...Any help will be greatly appreciated! Thank you!
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